BRACHYCOMA.—PLAGIA, 101 
20. Brachycoma spuria, sp. n., 2. 
Cinereous ; frontal band, four thoracic stripes, reflecting spots on the abdomen, anus, antenns,, and legs black ; 
palpi rufous. 
Length 6 millim. 
Head somewhat ochraceous ; front as broad as the eyes; frontal band narrower than the ochraceous lateral, 
portions ; frontal bristles on each side in a single row, descending as far as the end of the second antennal 
joint ; above the vibrisse a row of short bristles, mounting to nearly half the face. Antenne descending 
to near the vibrisse ; second joint with some short bristles; third joint four or five times as long as the 
second; arista thickened to the proximal half. Proboscis black; palpi cylindrical, rufous. Thorax and 
scutellum cinereous; thoracic dorsum with four black stripes, which become diffuse behind the transverse 
suture ; scutellum blackish at the base. Abdomen ovate; first segment black; the following segments 
cinereous, with black hind borders (also on the anal segment), blackish reflecting spots, and a black 
dorsal line ; macrochetz on the hind margins of the second and following segments. Front tibie with 
short bristles ; middle tibize with some long bristles; hind tibiz outwardly nearly fringe-like with bristles, 
and with a long bristle below the middle. Tegule whitish. Wings nearly hyaline ; small cross-vein 
a little before the middle of the discal cell; apical cross-vein slightly concave; posterior cross-vein 
almost straight. 
Hab. Mexico, Venta de Zopilote 2800 feet in Guerrero (H. H. Smith). 
Two female specimens. 
PLAGIA, 
Plagia, Meigen, System. Beschr. europ. zweifliigl. Ins. vii. p. 201 (1838). 
Of this genus—which is easily recognizable by the very oblique position of the 
exterior cross-veins and the bristles on some of the longitudinal veins—no species has 
hitherto been described from the New World. In the collections before me I find the 
following Central-American species :— 
]. Eyes thinly pilose . . . 2... 2 we ew. ew ) Setifrons, v. d. Wulp. 
Eyes bare . . . . ~ 2 2 
2. Proboscis short and rather thick, with distinct terminal lips. americana, v. d. Wulp. 
Proboscis long and slender, with scarcely thicker terminal lips. 3. 
3. Posterior cross-vein much nearer to the small cross-vein than 
to the curvation of the fourth vem . . . . rigidirostris, v. d. Wulp. 
Posterior cross-vein in the middle or beyond the middle be- 
tween the small cross-vein and the curvation of the fourth 
ven 5 ee ee ee we we ww ew ww ee tncognita, v. A. Walp. 
1. Plagia setifrons, sp. n., 2. 
Thorax and scutellum cinereous, the thorax with obsolete stripes; head white ; eyes thinly pilose; abdomen 
black, with whitish front borders to the segments; third antennal joint and the legs black; palpi and 
basal joints of the antenne rufous ; first, third, and fifth veins with bristles. 
Length 8 millim. 
Front broader than the eyes; frontal band blackish, as broad as the lateral portions; above the root of the 
antennz a white, somewhat impressed, point ; frontal bristles robust but not numerous, inserted on black 
points, and descending to beneath half of the eyes; inferior part of the cheeks with a rufous reflection ; 
